Html in expression

[umin-kyaw]

Hello Sir,

Let me ask a question about how to write html code in expression?

One day I watched one video in YouTuber who teaches Appsheet lesson.

At the end of his video he made a expression in virtual column app formula like

Concatenate ("

<table>

<tr>

<th><b>........</b></th>

</tr>

</table>")

The column type is text. There was no formatting (plain text, html).

After that he changed column type is longtext. And then formatting option appear like plain text, html. He also selected html.

His virtual column show table.

I also have done like him in virtual column. But There was no formatting option in my appsheet.com editor. 

Let me help how to do get?

Thanks

KMO